{"id":"CVE-2026-110066","kind":"vulnerability","aliases":["CVE-2026-110066"],"related":[],"title":"Microsoft Word: out-of-bounds read lets an attacker leak information over network","description":"Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.","summary":"A memory read past the end of a buffer in Microsoft Office Word lets an unauthorized attacker over a network read data from the process. The sources do not describe a code execution path.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-office","package","windows","word"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:24+00:00","first_seen_at":"2026-11-10T19:24:27+00:00","triaged_at":"2026-11-10T19:58:05+00:00","updated_at":"2026-11-10T19:58:05+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-11-10T19:58:05Z","model":"claude-haiku-5-5","output":{"fix":"- unknown","reach":"network","title":"Microsoft Word: out-of-bounds read lets an attacker leak information over network","impact":"low","summary":"A memory read past the end of a buffer in Microsoft Office Word lets an unauthorized attacker over a network read data from the process. The sources do not describe a code execution path.","audience":"everyone","category":"package","nicknames":[],"who_cares":["microsoft-office","word","windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"attacker reads some memory contents from the Word process","analyst_note":"Check the Microsoft Security Response Center entry for CVE-2026-110066 for affected builds, patch version and whether user interaction is required.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"People who open Microsoft Word documents on affected versions of Office. The sources do not list the affected builds or whether opening a file alone is enough to trigger it.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000649,"input_tokens":4493,"output_tokens":399,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-110066':17A,20A '-2026':16A,19A 'allow':70C 'attack':10A,43B,73C 'bound':6A,64C 'buffer':35B 'code':58B 'cve':15A,18A 'data':48B 'describ':56B 'disclos':75C 'end':32B 'execut':59B 'inform':12A,76C 'leak':11A 'let':8A,40B 'memori':28B 'microsoft':1A,22B,37B,67C 'microsoft-offic':21B 'network':14A,46B,79C 'offic':23B,38B,68C 'out-of-bound':3A,61C 'packag':24B 'past':30B 'path':60B 'process':51B 'read':7A,29B,47B,65C 'sourc':53B 'unauthor':42B,72C 'window':25B 'word':2A,26B,39B,69C","nicknames":[],"mitigations":[],"who_affected":"People who open Microsoft Word documents on affected versions of Office. The sources do not list the affected builds or whether opening a file alone is enough to trigger it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","microsoftoffice","package","windows","word"],"campaign_type":null,"search_a":"'-110066':17A,20A '-2026':16A,19A 'attack':10A 'bound':6A 'cve':15A,18A 'inform':12A 'leak':11A 'let':8A 'microsoft':1A 'network':14A 'out-of-bound':3A 'read':7A 'word':2A","search_b":"'attack':43B 'buffer':35B 'code':58B 'data':48B 'describ':56B 'end':32B 'execut':59B 'let':40B 'memori':28B 'microsoft':22B,37B 'microsoft-offic':21B 'network':46B 'offic':23B,38B 'packag':24B 'past':30B 'path':60B 'process':51B 'read':29B,47B 'sourc':53B 'unauthor':42B 'window':25B 'word':26B,39B","search_c":"'allow':70C 'attack':73C 'bound':64C 'disclos':75C 'inform':76C 'microsoft':67C 'network':79C 'offic':68C 'out-of-bound':61C 'read':65C 'unauthor':72C 'word':69C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:24+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-110066","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110066","severity":null,"published_at":"2026-11-10T19:18:24+00:00","modified_at":"2026-11-10T19:18:24+00:00","first_seen_at":"2026-11-10T19:24:27+00:00","fetched_at":"2026-11-10T19:24:27+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}